package org.ch00.test04.demo07.demo3;

/**
 * @author CSY
 * @date 2025 - 03 - 04
 */
public abstract class Door {
    /**
     * 开
     */
    public void open(){
        System.out.println("开门...");
    }

    /**
     * 关
     */
    public void close(){
        System.out.println("关门...");
    }
}
